Sino Chemtech

Keywords: LPG series high-speed centrifugal spray dryer, centrifugal spray dryer, high-speed centrifugal spray dryer

Category: Drying equipment series Product Overview: Spray drying is a widely used process in the liquid process shaping and drying industry. It is especially suitable for generating powdery and granular solid products from solutions, emulsions, suspensions and pasty liquid materials. Therefore, when the particle size distribution, residual moisture content, bulk density and particle shape of the finished product must meet high standards, spray drying is a better process.

product description   

Spray drying is a more widely used process in the liquid process forming and drying industry. It is especially suitable for generating powdery and granular solid products from solutions, emulsions, suspensions and pasty liquid materials. Therefore, when the particle size distribution, residual moisture content, bulk density and particle shape of the finished product must meet high standards, spray drying is a better process.

working principle   

After filtering and heating, the air enters the air distributor on the top of the dryer, and the hot air enters the drying chamber evenly in a spiral shape. The material liquid passes through the high-speed centrifugal atomizer at the top of the tower, and (rotating) sprays into very fine misty liquid beads, which can be dried into finished products in a very short time in co-current contact with hot air. The finished product is continuously output from the bottom of the drying tower and the cyclone separator, and the exhaust gas is evacuated by the fan.

Performance characteristics

◎The drying speed is fast, and the surface area of the material liquid is greatly increased after atomization. In the hot air flow, 95%-98% of the water can be evaporated instantly, and the drying time is only a few seconds. It is especially suitable for the drying of heat-sensitive materials.

◎The product has good uniformity, fluidity and solubility, high purity and good quality.

◎Simplified production process and convenient operation and control. For liquids with a moisture content of 40-60% (up to 90% for special materials), it can be dried into powder products at one time, without crushing and screening after drying, reducing production procedures and improving product purity. The product particle size, bulk density and water content can be adjusted by changing the operating conditions within a certain range, and the control and management are very convenient.

Adapt to materials

Chemical industry: sodium fluoride (potassium), basic dyes and pigments, dye intermediates, compound fertilizers, formaldehyde silicic acid, catalysts, sulfuric acid agents, amino acids, white carbon black, etc. Plastic resin: AB, ABS emulsion, urinary formaldehyde resin, phenolic resin, dense rubber (urea) formaldehyde resin, polyethylene, polyvinyl chloride, etc. Food industry: fat-rich milk powder, gluten, cocoa milk powder, milk replacer powder, blood hunting powder, egg white (yellow), etc.

Food and plants: oats, chicken juice, coffee, instant tea, flavored meat, protein, soybean, peanut protein, hydrolysate, etc. Sugars: corn syrup, corn starch, glucose, pectin, maltose, potassium sorbate, etc. Ceramics: alumina, ceramic tile materials, magnesium oxide, talcum powder, etc.

Technical specifications

Model/item/parameter	5	25	50	150	200-2000
Inlet temperature	140-350 self-control
Outlet temperature	80-90
Upper limit of water evaporation（kg/h）	5	25	50	150	200-2000
Transmission form of centrifugal spray head	Compressed air transmission	Mchanical transmission
Maximum speed（r.p.m）	25000	18000	18000	15000	8000-15000
Diametr of spray disc（mm）	50	120	120	150	180-240
Heat source	Electricity	Steam+electricity	Steam+electricity, fuel oil, gas, hot air stove
Upper limit of electric heating power（kw）	9	36	72	99
Overall dimensions (lengthxwidthxheight)（m）	1.8×0.93×2.2	3×2.7×4.26	3.5×3.5×4.8	5.5×4×7	Determined according to actual conditios
Dry powder recovery（%）	≥95

 

Note: The amount of water evaporation is related to the characteristics of the material and the temperature of the hot inlet and outlet. When the outlet temperature is 90oC, the water evaporation curve is shown in the above figure (for reference for selection). As the product is continuously updated, the relevant parameters will be changed without prior notice.

Ordering instruction

◎Name of material and liquid, physical properties: solid content (or water content), viscosity, surface tension, PH value.

◎After drying, powder capacity, allowable residual water content, particle size, and upper limit of allowable temperature.

◎Production, daily working hours.

◎Available energy: steam pressure available, electric capacity, available for coal, oil and gas.

◎Control requirements: Whether the inlet and outlet temperatures need to be controlled automatically. ◎Powder collection requirements: whether to install bag traps, and environmental requirements for exhaust emissions.

◎Other special requirements.

Technical specifications

Size	A	B	C	D	E1	E2	F	G	H	I
LPG-25	1290	3410	4260	1800	1200	1200	1000	1700	1300	1550
LPG-50	1730	4245	5100	2133	1640	1640	1250	1750	1800	1600
LPG-100	2500	5300	6000	2560	2100	2100	1750	1930	2600	1780
LPG-150	2800	6000	7000	2860	2180	2180	1970	2080	3050	1960
LPG-200	2800	6600	7300	3200	2300	2300	2210	2250	3050	2100
LPG-300	2800	8000	8700	3700	2800	2800	2520	2400	3040	2250